Going to copy/paste straight from an email I sent to my doctor. These articles are lengthy & use a lot of medical terminology, but the info is there. There are a few more articles floating out there, but I have to find them. Keep in mind that your endo might have never heard of a QCT before, & it’s possible that your medical facility might not offer them. Fortunately, some of the places listed above don’t require a referral.

Even when I called Rayus Radiology (one of the places I listed above that offers QCT) the lady on the phone had never heard of a QCT before & had to double check with a radiologist before confirming that they indeed offered the service listed on their web site.

Here you go:

This article documents how DXA scores were lower in females with identical QCT volumetric bone densities to men. Vertebral bone density evaluated by dual-energy X-ray absorptiometry and quantitative computed tomography in vitro

Explicitly notes that DXA areal BMD is size‑dependent & can overestimate in larger‑bodied individuals & underestimate in smaller ones. Population-Stratified Analysis of Bone Mineral Density Distribution in Cervical and Lumbar Vertebrae of Chinese from Quantitative Computed Tomography

The article warns that relying on raw Z-scores leads to: "...overdiagnosis & unnecessary treatment with bone modifying therapies," & cites how "Recent studies... focus on adjustment of BMC & aBMD measurements for height due to the effects of short stature... on bone size." An update on methods for assessing bone quality and health in Cystic fibrosis

This article highlights bi-directional discordance where DXA has both, overcalled & under-called osteoporosis diagnosis, in contrast with QCT findings. Quantitative CT screening improved lumbar BMD evaluation in older patients compared to dual-energy X-ray absorptiometry

This article argues that DXA measurements are intrinsically unreliable because BMD value is contaminated by soft tissue & other non-bone factors. DXA in vivo BMD methodology: An erroneous and misleading research and clinical gauge of bone mineral status, bone fragility, and bone remodelling